William adamson



@uitrit tatrs atmt @frn WILLIAM ADAMSON, OF PHILADELPHIA. PENNSYLVANIA.

Letters Ifzfent llro. 65,038, [.aecl Mitg/ 228, 1867.

IMPROVEMENT IN APPARATUS FOR SEGURINGPDLVERIZED AND OTHER MATERIALS T0 PAPER.

un Sclgnulc numb tu in tinte trttcrs atmtnnh making wat nf tin ante.

TO ALL-WHOIWI IT MAY CONCERN:

Be it known that L WILLIAM ADAMSOX, of Philadelphia` Pennsylvania, have invented certain Apparatus for Securing Pulverized and other Material to Paper and other Fabrics; and I do hereby declare the followingl to he a full, clear, and exact description of the same, reference being had to the accompanying drawing, and to the letters of referencemarked thereon. I

My invention consists of two endless aprons in combination with certain rollers, so arranged that the aprons will, converge towards two presser-rollers, as described hereafter. The paper or other fabric on the fluid surface of which the pulverized or other material has been deposited may pass between and traverse with the two converging aprons, by which a gradual pressureis imparted to the fabric and its coated surface, and the accumulation of ridges or masses of'the material at differeutpoints on the fabric prevented- In order to enable others to make and use my invention, I will now proceed to describe 'the manner of carrying it intoveil'ect'. On reference to the accompanying drawing, which forms a part of this specification-.-

Figure 1 is a vertical section of the apparatus.

Figure 2, a plan view.

Figure 3, a diagram illustrating part of the apparatus heretofore used.

A is the frame of the machine, at one end of which turn two rollers, lB and B, at the opposite end two similar rollers, C and C', and near the'latter two intermediate-rollers, D and D. An endless apron of vulcanized gum elastic, or of leather or suitable fabric, passes round the upper roller, B and C, and over and under the intermediate roller, D, a similar endless apron passing round the lower rollers B and C', and under and over the intermediate roller-D, The rollers B and B are situated at a distance apart from each other.` The rollers D and D are so close together that the two endless aprons, E and E', are compressed between them, one of these rollers being so weighted, or otherwise so acted upon by suitable appliances, as to compress the aprons with more or less force against the other roller. The two rollers C and C are a short distance apart from .each other, but nearer together than the rollers B and B. The rollers at one end of the machine are so geared together, and so driven, that the endless aprons will traverse in the direction pointed out by the arrows, tig. 1.

'Rollers have been heretofore used in the manufacture of sand and emery-paper for compressing the pulverized material on to and into the glued surface of the paper -or fabric, as shown in iig, 3, for instance, where'g/ and y represent two rollers, and a: the paper or fabric traversingin the direction otthel arrow. The pulverized material is scattered as evenly as\possible over the glued surface of the paper, and is pressed into the latter by the rollers. The objection to` this, the ordinary arrangement, is the tendency'of the material to accumulate in n ridge ormass, t, infront of the roller, and this mass will occasionally pass' between the rollers, sothat more of the material will .be accumulated at somepoints on the paper than at others. My invention has been designed to obviate this diiiculty.l

It will be seen, on reference to hg. 1, that owing to the' peculiar arrangement ofthe rollers, the endless aprons conv-erge from the rollers B and Bto the rollers D and D', leaving a space gradually diminishing in size for the admission of the paper or fabric :15, the pulverized material on the glued-surface of which is submitted to a gradual pressure between the two aprons before it receives its final pressure at the point where the aurons pass betweeuthe rollers D and D. From this point the aprons diverge, so that the paper can pass freely from the machine without being subjected to further pressure. It will be seen, without further description, that as thc pressure is applied gradually by means of the converging aprons, no objectionable ridges or accumulations of the pulverized. material can occur von the paper.

Hitherto I havev alluded to the apparatus as applied to the manufacture of sand and emery-paper; it can,

l however, be used to advantage in other manufactures in which it is desirable to spread evenly over fabrics, and

to secure to the same, pulverized or other material. In the manufacture of velvet wall-paper, for instance, the short fibres termed flock can be applied to the glued orpasted surface of the paper by the aid of the apparatus.V

I claim as my invention, and desire to secure by Letters Pateut- The two endless aprons E and F, in combination with rollers so arranged that the said aprons will converge towards pressure-rollers- D and D', as and for the purposeI described,

In testimony whereof I have signedsmy name to'this specification in the presence of two subscribing witnesses.

WM. ADAMSON.

Witnesses H. HowsoN, G. How\soN. 

